Signaling-horn.



W. KAISLING.

SIGNALING HORN.

APPucATloN FILED :uns 11. i914.

1 ,267,41 8. Patented May 28, 1918.A

Z/ Din/55 E5' 225A/Enfin' @my Z/Z//fm @zg/mg 5 Q z l im TED STATES BAIENT onirica.

WILLIM KAISLIING` OF CHICAGO, ILLINOIS, ASSIGNOR TO KELLOGG- SWITCHBOARD &; SUPPLY COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SIGNALING-HORN.

1526"] ,gli @o Specification of Letters Patent. Patented RIay 23, j gl application ined rune ii, i914.- seriai no. 844,413.

To all w/lwm t may concern: ments 3 and l as readily apparent from Fig. Be it lrnown that l, TWiLLrAi/r lAisLiNo, a l, and screws 8 serve to clamp the elements citizen of the United States of America, re- 3, 7 and l securely together. A strilrer siding at Chicago, in the county of Cook and preferably :forms an integral part of a plun- State of lillinois, have invented certain new ger 1 0, being also fixedly secured to an arso and useful lmprovements in Signalin mature il, and a resilient element such as Horns, of which the following is a speciithe spring l2, flexed as shown, normally cation. Y presses the striker to the right l) My invention relates to signaling devices against the diaphragm 7. This spring l2 and more particularly to a device of this genhas holes by which it is placed upon pins 55 eral character used to .vive precautionary sig-= 13 provided in the ring 8, insulating washers nals when used for instance in connection i4 being interposed as shown. Holes l5 are with automobiles, motor boats, or the like. provided in the element 3 to permit of pasln general my improved device provides sage of air. An electromagnet is provided a structure in which. the recoil of a resiliently within a split shell 16, which split shell, cup- 7o mounted striker is made use of to actuate a shaped in form, is fastened to the projecting diaphragm. An armature is provided to yannular flange 17 ofthe element 3. A core cause a movement of the striker and also to i8 is provided for the electromagnet, and control the movement of a vibratory conbetween the core and shell two coils respectact when such is used to control the actuatively 19 and 2O are mounted upon a spool. 75 'tions of an electromagnetic mechanism to A strip of insulation is inserted between the operate the armature.. core i8 and plunger i6 as apparent from @ne feature of my invention consists in Fig. l. the provision of a plurality of windings con- As will be seen through the use of collars nected in parallel to thereby-provide means and the washer 21, the elements i8 and 16 8o to accommodate for the discharge of curare held together by having the protruding rent due to the periodic disruption of the extremity 22 of the element 18 turned over circuit. as shown in Fig. l. The armature ll is I will explain one form which my invenpreferably circular to conform to the circution may take more in detail by referring to lar outline of the shell 16. A bracket 23 is 85 the accompanying drawing in which: iixedly'secured to the shell 16 by the screws Figure l is a longitudinal sectional view 24 and carries two insulatingly mounted of a signaling device constructed in accordsprings respectively 25 and 26. These ance with my invention; springs have contact points as shown and llig. 2 is a rear view of the device with are adapted to have circuit between them 90 the cup-shaped closure removed; broken whenever a projection 27 carried by Fig. 3 is a sectional view on line o-a of the plunger l0 presses against the spring 25 lEig. Il; t to withdraw it from electrical contact with Fig. l is a sectional view on line b-b of the spring 26. A contact segment 28 is also o Fig. i; and mounted to superpose the spring 26 but is 95 Fig. 5 is a diagrammatic view illustrati not in electrical contact with the said spring ing the circuit arrangements. as readily apparent from the structure illus- My improved signal includes the front trated.

plate l to which a resonator or horn 2 may It will be readily seen that as current in e5 he secured at the front thereof, and to which sulicient quantity is supplied to the coils, le@ at its rear portion is secured a step-like anthe armature ll is withdrawn from engagegular ring 3. The angular ring has a rivet ment with the diaphragm 7 against the ac- 4 and set screw 5 to hold in place a cuption of the spring 12, thereby causing an inshaped cap 6, the cap being provided with ward movement of the plunger l0 which ou bayonet slots so as to be readily removable causes the element 27 to break the circuit be- 105 and being secured in position by operating tween the springs 25 and 26, whereby the the screw 5 after said cap has been mounted circuit through the coils is opened as will in place. All of the apparatus is mounted presently appear to permit recoil of the within the parts thus set forth. A diastriker 9 so that it impinges against the diaphragin 7 is held in place between the 'elephragm 7 to cause a signal or alarm. 110

fic

ln llig. 5, l have shown more in detail the circuit arrangements where a push button 29 is designed to close circuit from battery 30 through both of the coils 19 and 20, which. coils are connected in parallel. 'llhe circuit passes through the springs 25 and 26 and as the element 27 actuates the spring 25, this circuit is broken so that the armature 1l may vibrate as well understood. These two coils are connected in parallel because the high resistance iine wire winding 2() may then discharge the current due to a break in the circuit through the low resistance winding i9, to thereby prevent arcing at the contacts provided between the springs 25 and 26.

llt will be seen that a very compact structure is provided. tor mounting the moving parts oit the devie and a highly ecient magnetic circuit results due to this arrangemento Furthermore the striker is actuated in a manner which secures uniform edect and a very even tone results more or less independent of the battery strength within reasonable limits. v

From what has been described the nature ci my invention it is 'thought will be readily clear to those skilled in the art as well as its 'Various applications. Having however thus described one iiorm which my invention may take, what il claim'as new and desire to secure by Letters Patent is:

i, i device ci the character described including a iront plate, a circular mountin,1 ring, a diaphragm securely held between sai plate and said mounting ring, a striker norinally in engagement with said diaphragm, a resilient mounting member for said striker adapted to impel said striker against said diaphragm, a cylindrical forwardly extendcup concentrically secured two said mounting ring, a magnet contained within said cup, a circular armature secured to said striker and extending out over the edge of said cup whereby said cup is included in the magnetic circuit o said magnet, said electromaguet adapted upon en'ergiaation to withn draw said striker away from said diaphragm against ce action ci" said resilient mounting member and means ior deenergizing said o vhereby said strilrer impinges said diaphragm.

2. [i device o the character described including a mounting plate, a diaphragm, an actuating member normally close to said diaphragm, a spring mounting member :for said actuating member lying against said mounting plate and adapted to impel said actuating member toward said diaphragm, means for holding said spring member in position, a cylindrical cup secured to said mountingn plate, an electromagnet contained within said cup for periodically drawing said actuating member away from said diaphragm against the action ci said spring, a circuit controlling-device secured to said cup for isernia 3. A sonorous device including a nfiouiitinb plate, a diaphragm, a resiliently mounts actuating member for vibrating said diaphragm, a forwardly extending cylindrical cup concentrically secured to said mounting plate, an electromagnet contained within said cup lor periodically withdrawin said actuating member away from sai .diaphragm to permit said diaphragm to be actuated by the recoil of said actuating member, a circular armature secured to said actuating member and extending past the periphery oisaid cylindrical cup whereby said cup is included in the magnetic circuit oit said electromagnet, a mounting bridge carrying a pair of interruptor contacts secured to the rear of said cup, and an operating member attached to said circular armature and extending through a circular oriiice in the core of said electromagnet tor actuating said interrupter contacts.

t. An electrical device including a mounting member, a circular front plate, a diaphragm securely held between said mounting member and said front plate, a strilrer for said diaphragm normally in engagement therewith, a leaf spring for holding said striker in engagement with said diaphragm, orifices in the ends oit" said leaf spring adapt ed to fit over pins in said mounting memi ber to hold said spring and striker in nors mal position, an electromagnet attached to said mounting member for actuating striker, and means tor intermittently energizing said electromagnet to cause said striker to vibrate said diaphragm.

5. An electrical signaling device includ ing a diaphragm, a circular mounting ring provided with a concentrically disposed ori ce, a cylindrical cup member having its ifori ward end open and adapted to be mounted within said orifice, an electromagnet, a striker for actuating said diaphragm, and circular armature secured to said striker and entendin out over the edge oi said cup to include t e said cup in the magnetic circuit i ci the magnet.

6. A device of the character described including a face plate, an annular recessed mounting ring, a sound emanating member secured between said plate and said mounting ring, a striker for engaging said sound emanating member, a cylindrical cup conm centrically secured to said mountinra ring, a magnet mounted within said cup an having said cup included in its magnetic circuit, a circular armature secured to said strilrer and extending out over the edge of said cup, interrupter contacts secured to said cup, means 'whereby when said magnet is energized sai/d l sov armature and striker are drawn away from Signedl by me at Chicago, county of Cook said sound emanating member, and an opand State of Illinois, in the presence of two=l0 eratindg member fastened t) said striker and Witnesses. exten in through an ori ce in the core of 5 said elezromagnet into operative relation WILLIAM KAISLING with said interrupter Contacts to cause said Witnesses: magnet to denergize and cause said striker GEORGE E. MUELLER, to impinge said sound emanating member. M. R. RooHFoRD. 

